Topic: Theory of Machines
A spherical joint has _____ degree (s) of freedom.
- A. One
- B. Two
- C. Three
- D. Four
Answer: C. Three
Explanation: A spherical joint (or ball and socket joint) allows rotational movement about all three mutually perpendicular axes in space but restricts all three linear translations along the axes. Therefore, it has 3 degrees of freedom (all rotational).